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A228720 as a simple table

na(n)
11
22
32
43
53
64
74
85
95
105
115
126
136
146
156
167
177
187
197
207
217
228
238
249
259
269
279
2810
2910
3010
3110
3211
3311
3411
3511
3611
3711
3811
3911
4011
4111
4211
4311
4412
4512
4612
4712
4813
4913
5013
5113
5213
5313
5413
5513
5614
5714
5814
5914
6014
6114
6214
6314
6415
6515
6615
6715
6815
6915
7015

[1,2,2,3,3,4,4,5,5,5,5,6,6,6,6,7,7,7,7,7,7,8,8,9,
 9,9,9,10,10,10,10,11,11,11,11,11,11,11,11,11,11,
 11,11,12,12,12,12,13,13,13,13,13,13,13,13,14,14,
 14,14,14,14,14,14,15,15,15,15,15,15,15]